If you had to choose an identity to go undercover, you'd choose a gynecologist.

The landlady fainted, and a group of people hurriedly carried her to the medical bed. Chen Qing pinched her philtrum and rubbed her chest. After a lot of effort, the landlady finally woke up slowly.

The landlady's heartbroken cries came from inside the house. Mr. Hu had died outside; the sky had fallen.

A group of people sighed and discussed what to do.

Old Pan came up with an idea: "It's unrealistic to let a woman go to Fujian to bring the body back. Why don't we have Mrs. Hu pay some money to have her fellow villagers in Fujian help bring the body back? If it's really inconvenient, we can cremate the body and bring the ashes back."

A group of people asked the landlady for her opinion, but she was at a loss and couldn't come up with any ideas.

Chen Qing said, "Send a telegram or call to ask about the situation in Fujian first, and then we'll make a plan. It's okay, I'll cover all the expenses first. The most important thing is to get the person back."

Chen Qing had just received a few large yellow croakers, so he didn't care about the money.

His words immediately gave everyone a sense of direction, and the division of labor became clear. Some people took Chen Qing's money and went to the post office to send telegrams, while others began to busy themselves with arranging Mr. Hu's funeral.

Several women advised the landlady to go home, telling her to wait for news and not to be too sad, as the neighbors could help her with anything.

The person who sent the telegram returned in the evening with the reply from the other side.

"The flash flood swept Mr. Hu away and buried him at the bottom of the mountain. There's no way to find him. We can't exactly dig up the mountain, can we? That would require so much manpower and resources, and we can't afford it. Mr. Hu's belongings are still at the hotel, and his fellow villagers have promised to help send them back."

Everyone breathed a sigh of relief; at least they didn't have to worry about the body anymore. In these chaotic times, human life was cheap, and holding a funeral would be the end of it.

It's just a pity for Mrs. Hu; she'll really have to remain a widow from now on.

Chen Qing took the telegram to Mrs. Hu and explained the whole story. Mrs. Hu was at a loss; she couldn't possibly go to Fujian to dig up mountains.

Mrs. Hu cried and said, "He went out to do business and took most of the family's savings with him. Now we are a widow and orphan, where are we going to get any money?"

Chen Qing comforted him, "Don't worry, I'll cover the money for you. Let's smooth things over first."

Mrs. Hu seemed to have found her pillar of support, and grabbed Chen Qing, saying, "Xiao Chen, you're a good person, so I'll trouble you. I won't treat you unfairly."

The funeral was held at Mrs. Hu's house and went smoothly. Her close friends and relatives came to offer their condolences. Mr. Hu's parents had also passed away in 1937, leaving only Mrs. Hu and her son, Xiao Bao.

The matter passed quickly, except for the addition of Mr. Hu's portrait in the house, and life gradually returned to normal.

Chen Qing was busy inside and out, spending several hundred yuan. Mrs. Hu never mentioned repaying the money, and neither did Chen Qing. He didn't care about such small amounts of money at all.

Xing'er comes every two days to have Chen Qing check her body. Fortunately, her condition has not worsened. Now she just needs penicillin.

Finally, a few days later, Chen Qing came to the basement again at night to check on the growth of the penicillin bacteria.

"Ding! Penicillin strain activity detected, potency ≥80 units/ml, simplified purification process unlocked: Traditional Chinese Medicine Clarification Method + Solvent Extraction Combined Solution." The system notification sounded in my mind.

Overjoyed, Chen Qing took out the tools he had prepared and began the purification process.

He didn't dare to delay, so he turned around and dragged a clean clay pot out from the corner of the wall.

He specifically chose these rough pottery vessels, which are more resistant to gentle heating than glass containers.

First, scrape the colonies from the petri dish into a clay pot, add pre-cooked honeysuckle dew (a neutralizing agent that can improve the purity), and simmer over a low flame with mulberry branches as firewood.

As the liquid in the clay pot gradually thickened, he took a gauze to filter out the mycelial residue. Then, following the system's instructions, he poured in an appropriate amount of high-proof liquor for extraction. After standing for a while, a thin, milky-white substance floated on the surface of the liquor.

This is not enough.

Chen Qing used the "water-milling method" from traditional Chinese medicine processing to take egg whites, beat them into the filtrate, and gently stir. The egg whites quickly absorbed the impurities in the liquid, coagulated into flocculent particles, and sank.

He held his breath and filtered the liquid layer by layer with fine silk, finally obtaining a small bottle of clear, pale yellow liquid.

"System notification: Purification complete. Crude penicillin solution obtained, which can be used to treat mild external wound infections and streptococcal inflammation. One virus reward, already implanted in the host's body."

Chen Qing almost burst out cursing: "What the hell? You implanted a virus into my body! What if it's HIV?"

At that moment, a voice appeared in my head: "Daddy, don't be angry. Baby won't hurt you. Baby feels wronged when Daddy says that."

"Who, who's speaking? Who's your father?" Chen Qing was a little confused.

"The baby is that virus."

"A talking virus? No, are you kidding me?" Chen Qing was speechless.

"Baby is amazing. Not only can he talk, but he can also talk to other viruses. He knows a lot of things." The voice rang out again.

Chen Qing was speechless. He finally understood that this virus could not only talk, but it was also a chatterbox.

"Then tell me first, what are your skills?"

My mind went completely silent immediately.

"Tch, he's still a piece of trash. From now on, you'll be called Little Trash."

"Baby has a name, baby's name is Xiao Ai!" the virus immediately protested.

"Xiao Ai, what a great name! Is your dad Kingsoft Antivirus?"

"Xiao Ai doesn't know anything about Kingsoft Antivirus, but she knows everything about viruses and can help you get better."

"Alright, Xiao Ai, all I need now is for you to turn off your device and shut up."

"Okay!" The voice in his head immediately disappeared, and time finally became quiet. Chen Qing breathed a sigh of relief, cursing the damn system a thousand times in his mind. Although he was helpless, he could only accept it.

He started the purification process again, and Xiao Ai's voice rang out once more: "Daddy, Daddy, are you purifying penicillin?"

"You really know a lot."

"I can talk to those penicillin bacteria and get them transferred to a bottle, so I can get high-purity penicillin."

Chen Qing pursed his lips: "I didn't realize you were a negotiation expert. Well then, you go and negotiate."

About ten minutes later, Xiao Ai's voice rang out again: "We're done talking. They agreed, but they want you to breed more of their kind."

"No problem, how do I transfer it?!" Chen Qing readily agreed. The more he cultivated, the more penicillin he would get. Why not? This way, he would have a continuous supply of penicillin.

"Take another look at the bottle."

Chen Qing looked at the bottle in her hand again; the liquid inside had become transparent.

He received high-purity penicillin, and Chen Qing was overjoyed. This Xiao Ai was truly amazing.

Chen Qing quickly put away the penicillin and left the basement. He planned to start treating Xing'er when she arrived tomorrow.

Chen Qing had just left the basement and put the medicine cabinet back in place when there was a knock on the door.

Chen Qing opened the door and saw Bai Jie. He quickly pulled Bai Jie inside, locked the door from the inside, picked her up, and carried her upstairs.

"Honey, I've missed you so much, it's been so long!"

(Two thousand words omitted here)

.....................

An hour later, Bai Jie lay in his arms, her eyes red: "Chen Qing, I'm leaving Shanghai."

"Where to?"

"Go to the Northwest, to Yan'an."

Why?

"The No. 76 and the Japanese have been searching for me. I can't stay in Shanghai anymore, so I have to move. The organization arranged for me to go to Yan'an."

He gently stroked the white hair in his arms and said softly, "After we drive out the Japanese, you can come back, and we can be together openly and honestly."

"Mmm!" Bai Jie hugged him, and the two kissed passionately.

After a long while, Bai Jie cupped his face and whispered, "I have a secret to tell you."

"What secret?"

"Actually, Wang Shen and I were a fake couple because of the need for our undercover work."

Chen Qing suddenly felt a strange sadness; he wasn't sure if he would ever see Bai Jie again.

"I understand, I'll wait for you."

He pulled a white jade peace pendant from under his pillow and hung it around Bai Jie's neck. It was a valuable piece of mutton fat jade that the Zhou family had found in the gift box they had given to Chen Qing.

"If we run out of money, we can pawn it and get at least a thousand silver dollars," Chen Qing said.

As I saw Bai Jie off, I noticed a car parked outside.

"It's almost time, let's go," the driver said to Bai Jie.

Bai Jie nodded, lowered her head, got into the car, and waved to Chen Qing.

Chen Qing stared blankly as the car disappeared into the alley, feeling utterly lost…